Fkiedeich veith



( Model.)

P. VEITH. VALVE APPARATUS.

Patented Sept. 14, 1897.

UNITED STATES PATENT OFFICE.

FRIEDRICH VEITH, OF OFFENBACH-ON-THE-MAIN, GERMANY.

VALVE APPARATUS.

SPECIFICATION forming part of Letters Patent No. 589,878, dated September 14, 1897.

Application filed March 1, 1897.

To all 2072,0171, it may concern" Be it known that I, FRIEDRICH VEITH, a subject of the German Emperor, residing at Olfenbach-on-the-Main, Germany, have invented certain new and useful Improvements in Valve Apparatus, of which the following is a specification.

My invention relates to valve apparatus, and has for its object to produce valve apparatus especially adapted for stopping the aperture in a pneumatic tire so as to provide an. arrangement for sealing up the tire which will not, as heretofore, require a large puncture or hole to be made in the tire.

To this end my invention consists in the construction and arrangement hereinafter set forth and claimed.

My invention will be understood by referring to the accompanying drawings, in which-- Figure 1 is a section through a valve apparatus embodying my invention, showing the same applied to a tire. Fig. 2 is an enlarged section showing the valve proper.

In the drawings, A represents the wheelrim, within which may be placed an outer tire B, inclosing the inner tire or flexible envelop O, which is pierced for the passage of a small-sized screw-threaded stein a, which is headed and may have on the outside thereof a washer a and nut 07 for holding the stem in the flexible envelop G. A nut (L8 may also be provided for screwing upon the stem at to hold the said stein rigidly in the wheel-rim A. Carried upon the screw-threaded stem C6 and screw-threaded internally and externally is a sleeve g, upon which is screwed a sleeve i, having a shoulder i between which and the top of the sleeve g a rubber packing or washer Z is located, which packing or washer surrounds the smooth portion of the stem a. The end of the stem to, as shown, projects up ward into the sleeve 5 and is formed at its end into a valve -seat a. Encircling the valveseat or end a of the stem at is a valve 7a, shown clearly in Fig. 2 as H-shaped in vertical cross-section, and cupped at the bottom to receive a yielding packing 70 and slitted at It for the entry of air at the proper time, and at its upper side cupped to receive Serial No. 625,632. (No model.)

a yielding packing 7a, which is shown as lying within the upturned rim k The packing k is intended to rest upon the valve-seat of the stem a when the parts are screwed together, as will be readily understood. The sleeve iis provided at its upper portion with a downwardly-projeoting rib or annular rim 1', which is adapted to fit within the rim k of the valve 70 and has between itself and the wall of the sleeve 1'- an annular recess 3. The sleeve 2' is surmounted ,by a screw-threaded nipple, upon which a cap 0 may be placed when the valve has been tightened to pre vent the escape of air from the tube, the said cap resting upon a packing n, laid in an annular space in the top of the sleeve 11. It will be obvious from the foregoing that a considerable-sized valve may be placed upon the small stem a, and by screwing together the parts g and 'i the packing 1 will be firmly squeezed between the shoulder i of the sleeve i and the top of the sleeve g, and the sleeve 1', descending, will enter its rim 21' within the rim 70 and force the cup-shaped valve it down upon its seat on the top of the stem at, the rim 70 entering the annulus '2 so that the tire will be securely sealed by this valve.

VV'ha-t I claim, and desire to secure by Letters Patent, is-

In a valve apparatus, the combination of -a hollow stem a terminating in a valve-seat ct, a sleeve i provided with an annular rib 17located opposite to and extending toward valve seat a, the said sleeve *5 being movable longitudinally over the stem, and a valve L; recessed on one side for the reception of apacking 75 and adapted to codperate with the valveseat a and provided at its other side with a rim k inolosiug the packing 7a, the said valve being located between the valve-seat a and the rim i, so that when the sleeve 21 is moved longitudinally over the stem at, the rim i will enter within the rim k on the valve and force the valve down upon its seat a on the hollow stem a, substantially as described.

FRIEDRICH VEITH.

\Vitnesses DEAN B. MASON, FRANK l-I. Mason. 

